Machine for making corner molding, beading, and the like



Nbv. 27, 1934. L E T s 1,982,466

MACHINE FOR MAKING CORNER MOLDING, BEADING, AND THE LIKE Filed July 15, 1931 6 Sheets-Sheet l A TTORNEY5 INVENTOR. I) v 4m (C H i j I 14 444 44 Nav. 27, [934. E CUR-n5 1,982,466

MACHINE FOR MAKING CORNER MOLDING, BEADING, AND THE LIKE Filed July 1'5, 1951 6 Sheets-Sheet 2 K m I ,MAJL 17; ATTORNEYS L. E. CURTIS 1,982,466

AND THE LIKE Nov. 27, 1934.

MACHINE FOR MAKING CORNER MOLDING, BEADING 6 Sheets-Sheet 4 Filed July 13, 1931 INVENTOR.

. Z, W, BY I ATTORNEYS 6 Sheets-Sheet 5 L. E. CURTIS Filed July 13, 1931 S: A A

MACHINE FOR MAKING CORNER MOLDING, BEADING,, AND THE LIKE Nov. 27, 1934.

INVENTOR.

ATTORNEYS NOV. 27, cuR s 1,982,466

MACHINE FOR MAKING CORNER MOLDING, BEADING, AND THE LIKE Filed July 13, 1951 s Sheets-Sheet 6 LL L| INVENTOR.

(71: vlkume $4 775 27M 1- ATTORNEYS Patented Nov. 27, 1934 UNITED STATES MACHINE FOR MAKING CORNER MOLDING,

READING, AND THE LIKE Lewis E. Curtis, Milwaukee, Wis., assignor to Milcor Steel Company, Milwaukee, Wis., a corporation of Delaware Application July 13, 1931, Serial No. 550,352

Claims.

This invention relates to a machine for producing corner molding, corner bead, or like type of article, which has expanded metal wings adapted to be embedded in the plaster or" the the metal thereby realizing the advantages of more rapid and economical production and which achieves this advantage without tearing the metal or impairing the clean quality of the cuts made in the metal to outline the meshes and connecting strands of the expanded metal wings of the corner molding. The body portion of the molding, bead, or the like, is suitably ridged and shaped during its progress through the machine by appropriate forming rollers.

Another object is to provide a machine of this character which is simple and durable in construction, reliable and effective in operation and easy and comparatively inexpensive to manufacture.

Other objects and advantages reside in certain novel features of the construction, arrangement and combination of parts which will be hereinafter more fully described and particularly pointed out in thezappended claims, reference being bad to the accompanying drawings forming a part of this specification, and in which:

Figure 1 is a fragmentary view in side elevation showing a machine embodying the presen invention;

Figure 2 is a view in transverse vertical cross section taken online 22 of Figure 1;

Figure 3 is a view in longitudinal vertical section taken on line 3--3 of Figure 2;

Figure 4 is a view in end elevation looking toward the left hand end of the machine as viewed in Figure 1;

Figure 5 is a view in transverse vertical section taken on line 5--5 of Figure 1, with parts shown in elevation for the sake of illustration;

Figure 6 is a fragmentary plan view showing a plurality of cutters and illustrating the manner inwhich the cutters are progressively spaced greater distances;

Figure 7 is a diagram further illustrating the progressive Variation in the spacing of the 55 cutters;

Figures is a view in transverse vertical cross section taken on line 88 of Figure 1;'

Figure 9 is a fragmentary and diagrammatic view in top plan of the preliminary or initial forming rollers;

Figure 10 is a fragmentary diagrammatic view in top plan showing the final forming rollers;

Figure 11 is a sectional view taken on line ll-l1 of Figure 1 and illustrating the structure of the feed table; and

Figure 12 is a diagrammatic plan view showing how the incisions are made inthe blank to expand the wings of the molding or corner.

Referring to the drawings, it will be seen that the machine proposes a base or frame 1 which provides a support and a framing for sets or groups of initial or preliminary forming rollers 2, a series of cutters 3 and a set or group of final forming rollers 5. The forming rollers 2 are utilized for the purpose of giving the body portion of the molding or bead a channel form and setting off the wings thereof as distinct portions of the structure.

As will be understood from Figures 1 and 9, each set of forming rollers consists of an upper roller 6 and a lower roller 7, the rollers being mounted on shafts 6 and '7' and being constrained to rotation by intermeshing gears 8. The active peripheral surfaces of the rollers are shaped to develop the channel formation by a series of progressively increasing rolling or bending actions, as willbe understood from Figure 9.

The several sets of cutters employed are of identical construction except that the spacing is progressively increased. As shown, each set of cutting mechanism comprises upper and lower shafts 10 and 11 supported for rotation in bearingsprovided therefor in frames or bearing brackets 12, 13 and 14 (see Figure 2). Each shaft 11 is offset rearwardly in the direction of feed of the work through the machine with respect to the shaft 10 of its'cutter set for a purpose which will hereinafter appear.

A sleeve 15 is keyed on each shaft 11 and provides a mounting for circular cutters 16 and 17. The cutters 16 and l? are spaced by means of a spacer 18 and are secured in proper position on the sleeve by virtue of the cutter 17 abutting a flange 19 of the sleeve and by virtue of the action of a nut 20 threadedly connected with the sleeve 15 and acting through a washer 21 to clamp the cutters between itself and the flange 19.

Coacting with each of the cutters l6 and '17 of each cutter set are cutter assemblies 23 and 24 mounted on and constrained to rotate with the no the constraining action of the bearing-"blockfld and housing 27 are constrained to rotate with the.

shaft 10. In order to provide for a transverse adjustment the cutters are :slidable transverse-. 1y of their bearing block and within their'housing and their transverse adjustment iscon-v trolled by means of a spacer 28'1ocatedbetween the bearing blocks and having flanges 29 abutting the cutters and also by set screws 30 threaded through the angular housing-27 engaging the inner ends of the cutters and securedin adjust.-

ed position by a lock nut 31. The transverse adjustmentrofrthea cutters is-v varied by: adjusting the screwsz30. andemployingthe:proper size of intermediate spacer: 28: In the. construction shown, the: spacers-:28 between the .cutter iassemblies 23 and 24 are of progressively decreasing transverse extent in order'to provide for the progressively: decreasing: spacing of the cutters from the inlet ztoitheaoutletaend ofthe'machinei The transversedimensions of the spacers 18 between the lower cutters 15 and. 16 is correspondingly variedl. The entireassembly of cutters 23 and 2 1 on leach shaft 10 "isrsecurely held in proper adjustmentby mean'sof a nut .32 threaded on the shaft "and'a stop collar 33- fixed thereon, thenut 32.:actingsthrough a washer 34 to bind or clamp the assembly between itself and the collar 33. Preferably; awasher33" is also provided adjacent the. collar- 33;

Ea'ch shaft 10 has portionsjournaled in adjustable-bearings-35; 36 and 37 'slidable in "guide-= ways I provided therefor in the 'frames 12, 13 and 147- The bearings 35, 36 and"37"may'rest directly on the bottoms of their guideways or may be shimmed upto an appropriate extent and in either event are firmly held in position by means ofscrews- 38; 39'and o threaded through the tops of thez'frames 12, 13 an'd l4 and hearing at their lower'ends against the adjustable bearings 35; 36 and 37, respectively. Each screw 39 has a beveled gear wheel' elfixed to its upper end and these beveledgear'wh'eels 41 mesh with beveled gear wheels 42 secured to a-transverse shaft 44' journ'aled supporting" yokes 45' carried by the bracket frames-12; 13'-and 14. One end of each shaft 44 1s squared or otherwise adapted as indicated'at 46 for coaction with'a-wrench'oroperatinghandle. A-similar supportandadjustment is provided for-the sl-iafts 6" and?" of the initialforming rollers 6: and '7.

The shafts 10 and 11 ere-constrained to appropriate rotation in opposite directions bymeans ofgears-47 and' 48 fixed on the'shaftslfi and- 11, respectively.

. Referring now to'F-igure '3, it will be seen that theccuttrsdG-I'and 17; the cutter 16 being shown iniEi'gurePB, arerprovidedwith transverseslots or grooves i 50, .which vass the cutters are rotated, come ?intoiali'nem'ent withitheispaces between the cuttersz25. Itiwill be obviousthat with this construction: each: cutter :25 :makes ianz'incision =0! 1 cut oflpredeterminedrlengthandeach slot or groove 50 in the cutters 16and:.17 provides for theprovisionninzthemetal orstock of an unbroken or uncut portion .of predetermined length; Because ofitheiact-lthatithe==cuttersrsl6 and 17 areuoffset yiew-shown in Figure '7, the first set of cutters from the cutters 25, the cutters 16 and 17 not only have cutting edges of the cutters 25 to carry out the cutting action, but the peripheries of these cutters 16 and 17 providing an anvil or support for the metal from the time the cutter first engages the metal until the completion of the cutting'action whereby to preclude tearing or irregular cutting thereof. During the cutting action'the cutters 25 coact with the cutters 16 and 17 -to make the incisions as described and also displace the strands resulting from the incisions downwardly over theedges of the cutters 16 and 1'7.

As will be understood from the diagrammatic actslonzthe-outer edge portions of the metal and each set acts on the next adjacent portion to the-outer edge portion and so on until the metal adjacent the body of the molding is reached. The lines of out are designated at C in the diagramKFigure'?) In :between each: settof "cutters the body. of themolding is guidedcand. sustained by cooper ableguide shoes 51 and 52lsecured respectively on. a supporting-shaft 53and supporting bracket 100 54 (see Figure 5)-.

After the cutting action has been completed the metal blank iszfed. through the set of final forming. rollers 5.. Each. set of final forming rollersdiffers only in the particular configura-- tion' of theworking surface of the rollers, and as... will be seenv from Figure 10, the first set of forming rollers, designated at 5 transform the channel formation into'slightly rounded form. The roundedformation is accentuated by the next set of forming rollers designated at 5 and along each edge:theridgeformation-is initiated. In the succeeding sets of forming ro1lers, desigmelted at 5 and 5 the ridge formation is developedinto its final form or shape.

As shown in'Figure 8, the final formingrollers are keyed on shafts 55 and 56 supported in. the same manner as the shafts 10 and 11.. The transverse positioning of the rollers is effected by means of spacing'sleeves 57'and 58 interposed"between--the rollers and a stop collar 59 and nut60. Twin gears ol -keyed to theshafts 55 and 56 and intermeshing constrain these shafts to corresponding movement in opposite directions. After leaving the-final forming rollere" the completed cornermolding has its wings straightened by virtue of their passing through straightening rollers 65' (seeF'igure 4).

The drive for the initial forming rollers 2, the cutters 3 and the final forming rollers 5 is takenfromashaft '70 extending along one side of the-machine and driving the lower shafts of the forming rollers and of the cutter assemblies by meansof beveled gearing '71. I

In operation; a flat sheet of imperforate metal is fed into the right hand end of the machine aslviewed in Figure 1 and is introduced through a stationary guide or feed table 75 (see Figure 12); The metal is first given the form of a flanged channel by the first or initial forming rollers 2 2 and 2 The flanged and channeled formation. then passes into the cutting mechanismandeach set of cuttersforins a longitudinal row of incisions beginning at their outer edges and progressing inwardly toward the bodyof the channel as the blank is fed through the machine. After the cutting action has been completed and the strandsvhave been spread or displaced by the cutters, the body of the mold- 15C ing is given the curved and ridged formation in a manner hereinabove described.

Figure 12 illustrates the action of the first two sets of cutters. The remaining sets operate in exactly the same manner to expand the metal of the wings.

The invention claimed is:

1. A machine for cutting and expanding metal comprising a series of sets of rotary cutters of progressively decreasing transverse spacing and operable to successively form longitudinal rows of incisions in the metal and to displace the metal adjacent each incision downwardly and thereby expand the same, each set having a pair of lower circular cutters and cooperable circular series of upper cutters, the lower cutters being offset with respect to the upper cutters rearwardly with respect to the direction of feed whereby to support the metal when the same is being operated upon by the cutters to preclude tearing or irregular cutting and means for rotating said cutters.

2. A machine for cutting and expanding metal comprising a series of sets of rotary cutters of progressively decreasing transverse spacing and operable to successively form'longitudinal rows of incisions in the metal and to displace the metal adjacent each incision downwardly and thereby expand the same, each set having a pair of lower circular cutters and cooperable circular series of uppercutters, the lower cutters being offset with respect to the upper cutters rearwardly with respect to the direction of feed whereby to support the metal when the same is being operated upon by the cutters to preclude tearing or irregular cutting.

3. A machine for cutting and expanding metal comprising cooperable upper and lower rotary cutters of progressively decreasing transverse spacing and operable to successively form longitudinal rows of incisions in the metal and to displace the metal adjacent each incision downwardly and thereby expand the same, the lower cutters being offset relative to the upper cutters and rearwardly with respect to the direction of feed whereby to support the metal when the same is being operated upon by the cutters to preclude tearing or irregular cutting.

a. A machine of the character described comprising a series of sets of rotary cutters of progressively decreasing transverse spacing, each set having a pair of lower combined cutters and anvils, and cooperable circular series of upper cutters designed to coact with the edges of the lower circular cutters to form incisions in the metal and to displace portions of the metal downwardly, said combined cutters and anvils being offset horizontally with respect tothe upper cutters and rearwardly in the direction of the feed to provide a positive support for the metal blank when the upper series of cutters initially have contact therewith.

5. A machine of the character described comprising a frame, a series of pairs of preliminary forming rollers adapted to produce a flanged channel formation in a sheet of metal, a series of cooperable rotary cutters of progressively decreasing transverse spacing and operable tosuc cessively form longitudinal rows of incisions in the flanges of the channeled blank and to displace the metal adjacent each incision downwardly whereby to expand the flanges, cooperable uide shoes between each set of cutters and engageable with the body portion of the channeled blank, and a series of final forming rollers for ridging and curving the channeled body portion of the blank.

6. In a machine of the character described, a set of rotary cutters consisting of upper and lower shafts, circular cutters constrained to rotate with the lower shaft, a spacer between said cutters, a series of cutters on the upper shaft for each circular cutter of the lower shaft, a mounting for each series of circular cutters including a bearing block fixed to the shaft and on which the cutters of the series are slidably supported, an angular housing coacting with the cutters and with the bearing block to constrain the cutters to rotate with the upper shaft while leaving them free for transverse adjustment, aspacer disposed between the series of cutters and limiting their approach toward each other, and adjusting screws for forcof upper and lower shafts, circular cutters constrained to rotate with the lower shaft, a spacer between said cutters, a series of cutters on the upper shaft for each circular cutter of the lower shaft, and a spacer between the series of cutters on the upper shaft, said spacers of the upper and lower shafts having correspondingly and progressively decreasing transverse dimensions from the inlet to the outlet end of the machine.

9. In a machine of the character described, a set of rotary cutters consisting of upper and lower shafts, circular cutters constrained to rotate with the lower shaft, a spacer between said cutters, a series of cutters on the upper shaft for each circular cutter of the lower shaft, a mounting for each series of circular cutters including a supporting member fixed to the shaft and on which the cutters of the series are adjustably supported, a housing coacting with the mounting member to constrain the cutters to rotate with the upper shaft, a spacer disposed between the cutters of the series and limiting their approach toward each other, and means for forcing the circular series of cutters toward each other and against the spacer.

10. A machine of the character described comprising a series of cooperable rollers engageable with a sheet of metal for appropriately shaping the body'portion thereof and feeding the sheet through the machine and a series of sets of rotary cutters, said sets of rotary cutters being spaced longitudinally along the machine and the cutters of the several sets having a progressively decreasing transverse spacing, said cutters successively acting on edge portions of the sheet to slit and expand, the same whereby to form the expanded metal wings.

LEWIS E. CURTIS. 

